Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Release process
Question: Is is_null() an alias for isset()? Based on this statement and my understanding of both funcitons, it should be. Andi Gutmans [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... At 07:02 PM 5/3/2001 -0500, Andrei Zmievski wrote: At 06:31 PM 5/3/01 -0500, Richard Lynch wrote: Um, lots of people use isset($row['foo]) to detect NULL in the database... Are you going to change that behaviour? Don't. If the column is missing, they screwed up their SQL, which is not within the pervue of PHP to fix in the first place... You are arguing my point, Richard. Andrei, Not exactly. No matter if it is set to NULL or unset then isset() will give the same result. And most people use isset() AFAIK. Andi -- PHP Development Mailing List http://www.php.net/ To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED] -- PHP Development Mailing List http://www.php.net/ To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Release process
At 17:30 4/5/2001, Joe Brown wrote: Question: Is is_null() an alias for isset()? Based on this statement and my understanding of both funcitons, it should be. No it's not, it's a function. As such, it cannot detect whether a variable exists and has a null value, or is undefined completely. Zeev -- PHP Development Mailing List http://www.php.net/ To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV]Re: [PHP-QA] Re: [PHP-DEV] Release process
On Fri, 4 May 2001, Zeev Suraski wrote:
At 17:30 4/5/2001, Joe Brown wrote:
Question:
Is is_null() an alias for isset()?
Based on this statement and my understanding of both funcitons, it should
be.
No it's not, it's a function. As such, it cannot detect whether a variable
exists and has a null value, or is undefined completely.
It can if you use it like I have been:
function whatever()
{
$var = NULL;
if (is_null($var)) {
echo variable is null;
}
}
I'm a bit crazy, so I pre-assign a lot of my variables at the top of my
functions (I never could really get used to not pre-declaring
variables)...
-Sterling
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[PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Release process
Err, as you say, PHP should make things easy. I don't see how making tell NULL from an undefined variable makes anything easier. At 15:49 3.5. 2001, Andi Gutmans wrote the following: -- At 08:48 AM 5/3/2001 -0500, Andrei Zmievski wrote: On Thu, 03 May 2001, Andi Gutmans wrote: key_exists(), you mean? I didn't put it in, and as far as I know it's still there. I'd really like to nuke it. I can sort of see his point really, if $array['foo'] = NULL there is no way to know whether key 'foo' exists or not.. Yeah but I'm afraid it'll make scripts be written on behavior which shouldn't be counted on. Maybe in future versions of Zend $array['foo'] won't be defined. There are certain situations where I think it was impossible to not define it so it was defined with NULL meaning it's not defined. Andi -- PHP Quality Assurance Mailing List http://www.php.net/ To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED] --end of quote-- [EMAIL PROTECTED] - And the eyes of them both were opened and they saw that their files were world readable and writable, so they chmoded 600 their files. - Book of Installation chapt 3 sec 7 -- PHP Development Mailing List http://www.php.net/ To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
[PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Release process
insert impossible somewhere in the sentence to make it make sense. At 16:04 3.5. 2001, Cynic wrote the following: -- Err, as you say, PHP should make things easy. I don't see how making tell NULL from an undefined variable makes anything easier. At 15:49 3.5. 2001, Andi Gutmans wrote the following: -- At 08:48 AM 5/3/2001 -0500, Andrei Zmievski wrote: On Thu, 03 May 2001, Andi Gutmans wrote: key_exists(), you mean? I didn't put it in, and as far as I know it's still there. I'd really like to nuke it. I can sort of see his point really, if $array['foo'] = NULL there is no way to know whether key 'foo' exists or not.. Yeah but I'm afraid it'll make scripts be written on behavior which shouldn't be counted on. Maybe in future versions of Zend $array['foo'] won't be defined. There are certain situations where I think it was impossible to not define it so it was defined with NULL meaning it's not defined. Andi -- PHP Quality Assurance Mailing List http://www.php.net/ To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED] --end of quote-- [EMAIL PROTECTED] - And the eyes of them both were opened and they saw that their files were world readable and writable, so they chmoded 600 their files. - Book of Installation chapt 3 sec 7 -- PHP Quality Assurance Mailing List http://www.php.net/ To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED] --end of quote-- [EMAIL PROTECTED] - And the eyes of them both were opened and they saw that their files were world readable and writable, so they chmoded 600 their files. - Book of Installation chapt 3 sec 7 -- PHP Development Mailing List http://www.php.net/ To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
[PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Release process
On Thu, 03 May 2001, Andi Gutmans wrote: Yeah but I'm afraid it'll make scripts be written on behavior which shouldn't be counted on. Maybe in future versions of Zend $array['foo'] won't be defined. There are certain situations where I think it was impossible to not define it so it was defined with NULL meaning it's not defined. Um, but some db extensions return NULL values as part of the array, so if column 'foo' is NULL in the db, you'd want the result array to have NULL under key 'foo' - it just won't do to have that column be missing. Um, lots of people use isset($row['foo]) to detect NULL in the database... Are you going to change that behaviour? Don't. If the column is missing, they screwed up their SQL, which is not within the pervue of PHP to fix in the first place... -- WARNING [EMAIL PROTECTED] address is not working -- Use [EMAIL PROTECTED] Wanna help me out? Like Music? Buy a CD: http://l-i-e.com/artists.htm Volunteer a little time: http://chatmusic.com/volunteer.htm -- PHP Development Mailing List http://www.php.net/ To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Release process
At 06:31 PM 5/3/01 -0500, Richard Lynch wrote: Um, lots of people use isset($row['foo]) to detect NULL in the database... Are you going to change that behaviour? Don't. If the column is missing, they screwed up their SQL, which is not within the pervue of PHP to fix in the first place... You are arguing my point, Richard. -Andrei -- PHP Development Mailing List http://www.php.net/ To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Release process
At 07:02 PM 5/3/2001 -0500, Andrei Zmievski wrote: At 06:31 PM 5/3/01 -0500, Richard Lynch wrote: Um, lots of people use isset($row['foo]) to detect NULL in the database... Are you going to change that behaviour? Don't. If the column is missing, they screwed up their SQL, which is not within the pervue of PHP to fix in the first place... You are arguing my point, Richard. Andrei, Not exactly. No matter if it is set to NULL or unset then isset() will give the same result. And most people use isset() AFAIK. Andi -- PHP Development Mailing List http://www.php.net/ To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Release process
At 03:14 AM 5/4/01 +0300, Andi Gutmans wrote: Not exactly. No matter if it is set to NULL or unset then isset() will give the same result. And most people use isset() AFAIK. Whatever the current situation, there needs to be a way to check whether a certain array entry is NULL or not. -Andrei -- PHP Development Mailing List http://www.php.net/ To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Re: [PHP-QA] Re: [PHP-DEV] Release process
At 07:16 PM 5/3/2001 -0500, Andrei Zmievski wrote: At 03:14 AM 5/4/01 +0300, Andi Gutmans wrote: Not exactly. No matter if it is set to NULL or unset then isset() will give the same result. And most people use isset() AFAIK. Whatever the current situation, there needs to be a way to check whether a certain array entry is NULL or not. If so then we need to make sure that modules like the MySQL module still continue to behave exactly like they used to with isset() and other ways programmers were working. I'm not saying you're wrong. It's probably a good idea but we need to think about the consequences and other changes we might need to make at the same time before breaking stuff. We should probably save all of the NULL stuff for 4.1.x. If we do it the right way we might end up breaking certain scripts. Andi -- PHP Development Mailing List http://www.php.net/ To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
